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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY ¥ in Millions, $ in Millions | CNY (¥) shares | USD ($) shares | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] CNY (¥) | Ordinary shares CNY (¥) shares | Additional paid-in capital CNY (¥) | Statutory reserves CNY (¥) | Accumulated other comprehensive income/(loss) CNY (¥) | Retained earnings CNY (¥) | Retained earnings Cumulative Effect, Period of Adoption, Adjusted Balance [Member] CNY (¥) | Treasury stock CNY (¥) shares | Total Ctrip's shareholders' equity CNY (¥) | Total Ctrip's shareholders' equity Cumulative Effect, Period of Adoption, Adjusted Balance [Member] CNY (¥) | Non-controlling interests CNY (¥)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Changes in shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares for the exercise of stock options (in shares) | shares |  | 3,495,960 | 3,495,960 |  | 6,935,904 | [1] |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2019 |  | ¥ 105,703 |  | ¥ (83) | ¥ 6 |  | ¥ 83,614 | ¥ 635 | ¥ (1,505) | ¥ 22,803 | ¥ (83) | ¥ (2,111) | ¥ 103,442 | ¥ (83) | ¥ 2,261
Balance (in shares) at Dec. 31, 2019 | shares | [1] |  |  |  | 592,691,232 |  |  |  |  |  |  | (23,432,968) |  |  |
Changes in shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares for the exercise of stock options |  | 159 |  |  |  |  | 159 |  |  |  |  |  | 159 |  |
Share-based compensation |  | 1,873 |  |  |  |  | 1,873 |  |  |  |  |  | 1,873 |  |
Appropriations to statutory reserves |  |  |  |  |  |  |  | 3 |  | (3) |  |  |  |  |
Foreign currency translation adjustments |  | 75 |  |  |  |  |  |  | 75 |  |  |  | 75 |  |
Unrealized securities holding losses |  | (178) |  |  |  |  |  |  | (178) |  |  |  | (178) |  |
Accretion of redeemable non-controlling interests |  | (40) |  |  |  |  |  |  |  | (40) |  |  | (40) |  |
Net income / (loss) |  | (3,269) |  |  |  |  |  |  |  | (3,207) |  |  | (3,207) |  | (62)
Deconsolidation of shares in subsidiaries |  | 176 |  |  |  |  |  |  |  |  |  |  |  |  | 176
Issuance of additional equity stake by subsidiaries |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 5
Disposal of shares in subsidiaries |  | (234) |  |  |  |  | 0 | (1) |  |  |  |  | (1) |  | (233)
Equity transaction in which a non-controlling interest in a subsidiary is exchanged for a non-controlling interest in another subsidiary |  |  |  |  |  |  | 9 |  |  |  |  |  | 9 |  | (9)
Acquisition of additional shares in subsidiaries |  | (2,620) |  |  |  |  | (1,695) |  |  |  |  |  | (1,695) |  | (925)
Balance at Dec. 31, 2020 |  | ¥ 101,567 |  |  | ¥ 6 |  | 83,960 | 637 | (1,608) | 19,470 |  | ¥ (2,111) | 100,354 |  | 1,213
Balance (in shares) at Dec. 31, 2020 | shares | [1] |  |  |  | 599,627,136 |  |  |  |  |  |  | (23,432,968) |  |  |
Changes in shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares for the exercise of stock options (in shares) | shares |  | 5,106,035 | 5,106,035 |  | 5,321,521 | [1] |  |  |  |  |  |  |  |  |
Issuance of ordinary shares for the exercise of stock options |  | ¥ 307 |  |  | ¥ 0 |  | 307 |  |  |  |  |  | 307 |  |
Share-based compensation |  | 1,681 |  |  |  |  | 1,681 |  |  |  |  |  | 1,681 |  |
Appropriations to statutory reserves |  |  |  |  |  |  |  | 97 |  | (97) |  |  |  |  |
Foreign currency translation adjustments |  | 2 |  |  |  |  |  |  | 2 |  |  |  | 2 |  |
Unrealized securities holding losses |  | 2 |  |  |  |  |  |  | 2 |  |  |  | 2 |  |
Accretion of redeemable non-controlling interests |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Net income / (loss) |  | (645) |  |  |  |  |  |  |  | (550) |  |  | (550) |  | (95)
Issuance of ordinary shares, net of issuance costs |  | 7,984 |  |  | ¥ 0 |  | 7,984 |  |  |  |  |  | 7,984 |  | 0
Issuance of ordinary shares, net of issuance costs (shares) | shares | [1] |  |  |  | 36,380,900 |  |  |  |  |  |  |  |  |  |
Acquisition of additional shares in subsidiaries |  | (442) |  |  |  |  | (103) |  |  |  |  |  | (103) |  | (339)
Business combination |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  | 0
Establishment of subsidiaries |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  | 0
Balance at Dec. 31, 2021 |  | ¥ 110,456 |  |  | ¥ 6 |  | 93,829 | 734 | (1,604) | 18,823 |  | ¥ (2,111) | 109,677 |  | 779
Balance (in shares) at Dec. 31, 2021 | shares | [1] |  |  |  | 641,329,557 |  |  |  |  |  |  | (23,432,968) |  |  |
Changes in shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares for the exercise of stock options (in shares) | shares |  | 4,493,648 | 4,493,648 |  | 4,737,273 |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares for the exercise of stock options |  | ¥ 179 |  |  | ¥ 0 |  | 179 |  |  |  |  |  | 179 |  |
Share-based compensation |  | 1,188 |  |  |  |  | 1,188 |  |  |  |  |  | 1,188 |  |
Appropriations to statutory reserves |  |  |  |  |  |  |  | 91 |  | (91) |  |  |  |  |
Foreign currency translation adjustments |  | 78 | $ 11 |  |  |  |  |  | 78 |  |  |  | 78 |  |
Unrealized securities holding losses |  | (1,126) |  |  |  |  |  |  | (1,126) |  |  |  | (1,126) |  |
Accretion of redeemable non-controlling interests |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |
Less: Amounts reclassified from accumulated other comprehensive income/(loss) to net (loss)/income (Note 7) |  | 884 |  |  |  |  |  |  | 884 |  |  |  | 884 |  |
Net income / (loss) |  | 1,367 |  |  |  |  |  |  |  | 1,403 |  |  | 1,403 |  | (36)
Disposal of shares in subsidiaries |  | (4) |  |  |  |  |  |  |  |  |  |  |  |  | (4)
Acquisition of additional shares in subsidiaries |  | (3) |  |  |  |  | 0 |  |  |  |  |  | 0 |  | (3)
Balance at Dec. 31, 2022 |  | ¥ 113,019 | $ 16,386 |  | ¥ 6 |  | ¥ 95,196 | ¥ 825 | ¥ (1,768) | ¥ 20,135 |  | ¥ (2,111) | ¥ 112,283 |  | ¥ 736
Balance (in shares) at Dec. 31, 2022 | shares |  |  |  |  | 646,066,830 |  |  |  |  |  |  | (23,432,968) |  |  |
[1] | The number of shares outstanding and treasury stock have been retrospectively adjusted for the Share Subdivision that became effective on March 18, 2021 as detailed in Note 2 and Note 20.

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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant